media: i2c: ov9282: Add external FSIN trigger snapshot mode

This patch adds support for external FSIN-triggered snapshot mode
to the OmniVision OV9282 sensor driver. It enables frame capture
synchronized with an external hardware trigger signal.

Signed-off-by: omer <[email protected]>

Author: omeredemen

arch/arm/boot/dts/overlays/ov9281-overlay.dts

@@ -1,8 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
-// Definitions for OV9281_trig camera module on VC I2C bus
+// Definitions for OV9281 camera module on VC I2C bus
 /dts-v1/;
 /plugin/;
 
+#include <dt-bindings/gpio/gpio.h>
 
 /{
 	compatible = "brcm,bcm2835";

drivers/media/i2c/ov9282.c

@@ -1023,7 +1023,7 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
 			{OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW8},
 		}
 	};
-	struct ov9282_reg_list *reg_list;
+	const struct ov9282_reg_list *reg_list;
 	int bitdepth_index;
 	int ret;